JPS5550751A - Amplifier - Google Patents
AmplifierInfo
- Publication number
- JPS5550751A JPS5550751A JP12444378A JP12444378A JPS5550751A JP S5550751 A JPS5550751 A JP S5550751A JP 12444378 A JP12444378 A JP 12444378A JP 12444378 A JP12444378 A JP 12444378A JP S5550751 A JPS5550751 A JP S5550751A
- Authority
- JP
- Japan
- Prior art keywords
- amplifier
- circuit
- coaxial cable
- terminal
- gain adjustment
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
Abstract
PURPOSE: To obtain the amplifier having the gain if f1/2 to the frequency f, by providing the negative feedback circuit including resistor and inductance between the input and output of the series circuit of amplifier and gain adjustment circuit.
CONSTITUTION: At the relay and amplification of CATV, the input signal from the coaxial cable is fed to the terminal 6, it is amplified at the transistor Tr2, and it is connected to the next stage amplifier from the output terminal 20 via the gain adjustment circuit 18. From the terminal 20, the series circuit of the resistor R30 and inductance L32 is connected to the base of Tr2 via the DC blocking capacitor C34 to constitute the negative feedback circuit. By suitably selecting the value of R30 and L32, the variable resistor 22 of the circuit 18 is changed for the gain adjustment depending on the length of coaxial cable, the f1/2 characteristics depending on the length of coaxial cable can be compensated to establish the amplifier simple in adjustment.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12444378A JPS5550751A (en) | 1978-10-09 | 1978-10-09 | Amplifier |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12444378A JPS5550751A (en) | 1978-10-09 | 1978-10-09 | Amplifier |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5550751A true JPS5550751A (en) | 1980-04-12 |
JPS633487B2 JPS633487B2 (en) | 1988-01-25 |
Family
ID=14885622
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP12444378A Granted JPS5550751A (en) | 1978-10-09 | 1978-10-09 | Amplifier |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5550751A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63256240A (en) * | 1987-04-13 | 1988-10-24 | Nippon Mining Co Ltd | Method for continuous casting metal |
US5072199A (en) * | 1990-08-02 | 1991-12-10 | The Boeing Company | Broadband N-way active power splitter |
-
1978
- 1978-10-09 JP JP12444378A patent/JPS5550751A/en active Granted
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63256240A (en) * | 1987-04-13 | 1988-10-24 | Nippon Mining Co Ltd | Method for continuous casting metal |
JPH0465741B2 (en) * | 1987-04-13 | 1992-10-21 | Nippon Mining Co | |
US5072199A (en) * | 1990-08-02 | 1991-12-10 | The Boeing Company | Broadband N-way active power splitter |
Also Published As
Publication number | Publication date |
---|---|
JPS633487B2 (en) | 1988-01-25 |
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